BIND 9.4.1-P1 freezes randomly on FreeBSD 6.1

[Mark Andrews]

> Recently, we've updated our internal nameservers from BIND 9.3.2 to  
> 9.3.4-P1, and then to BIND 9.4.1-P1.  We're running this on FreeBSD  
> 6.1 on a P4 2.8 GHz with 1GB of RAM.  We're experiencing a problem  
> where named will be running normally, at 10-14% CPU load and right at  
> the 515M memory cap that we set for it, and then it will suddenly  
> stop doing recursive lookups.  What is interesting here is that the  
> box will continue to do lookups for domains for which we have  
> authority, but lookups of outside domains just flat out stop until we  
> restart named.
> 
> I am curious if anyone else has experienced a similar problem with  
> BIND 9.4.1-P1, and if so, if there is a fix for this.
> 
> Thanks,
> 
> --Craig

	This is symptomatic of named hitting the datasize limit.

	Which config option did you use?  The cache size should
	be limited by max-cache-size which is a soft limit and
	should be less than datasize.

	Note FreeBSD sets datasize to 512MB by default and you need
	to reboot to reconfigure this upwards.  See the FreeBSD
	handbook for how to change this.

	Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews at isc.org